From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Visit concerning battery ignition modifications for the Goshawk II engine.
| Identifier | ExFiles\Box 54\5\ Scan178 | |
| Date | 21th December 1921 | |
| X.3485. Extract from R7/M30.12.21. RE VISIT OF MESSRS HS {Lord Ernest Hives - Chair} AND HY {Tom Haldenby - Plant Engineer} TO WEST WITTERINGHenry Royce's home town ON WEDNESDAY, DECEMBER 21st 1921. GOSHAWK II. (8) BATTERY IGNITION. X.3485. Regarding the ventilation of the H.T. distributor the new condenser tunnel will allow a way up for the air. To provide an outlet we have arranged a hole in the moulding opposite the rotor, covered by a piece of gauze. The movement of the rotor should cause ventilation to go on all the time the engine is running. The ventilation hole in the H.T. moulding will look backwards away from the radiator so as to take advantage of, and not oppose the air draught through the bonnet. X.4079 With regard to Mr. Hives' suggestion that we may want to wind a coil specially for the Goshawk since it runs on the average at a higher speed than the 40/50, I would like him to send particulars of the other windings at present on test. With regard to this point I have the impression that there is not enough pressure on the L.T. contacts. It should be as much as on the Delco. Will you kindly see if the ignition will go faster with a L.T. rocker spring, giving more pressure on the contacts. X.3985. If Mr. Clark has not already got an oscillograph, I should like him to get one, or a pair of these instruments and take oscillograph diagrams of the primary and secondary currents, the same as the late Dr. Watson did for our ignition many years ago, and as Attwater-Kent shew in their catologue. | ||